Self-locking sash-fastener.



R. OVERAND.

SELF LOCKING SASH FASTENER.

APPLICATION FILED APR. l0. 1915.

Patented Aug. 3, 1915.

Uni n sa ROY OVERAND, OF GALESBURG, ILLINOIS.

SELF-LOCKING. SASH-FASTENER.

maarre.

Specification of Letters Patent.

PatentedAug. 3, 1915.

Application filed April 1G, 1915. Serial No. 20,466.

ATo all whom t may concern:

Be it known-that I, ROY OVERAND, a

citizen of the United States, and a resident the following a specification. A

The invention relates to devices made in two co-'acting or interlocking'parts, one of which is Xed to the-upper and the other to the lower window-sash for the purpose ot locking them when both sashes are closed.

The' principal object of the invention is to generally yimprove the construction and increase the capacity, utility and efficiency of devices of this character.

Another object is to provide co-acting memberswhich will automatically interlock when they are brought into engaging positions. f i i A' further object is toprovide a device which cannot be operated, as by a blade, hook or lother instrument, from the outside, thereby preventing a trespasser from opening the window'. 4 y

v .It ,is another object to provide a device by means of which the 'sashes will be automatically vdrawnV together as the members interlock, whereby rattling of the saslies will be prevented. Furthermore, thek sashes are brought so closely together that it will be impossible to insert even'a thin blade between them.

i That the mechanism constituting the means for carrying out the objects yabove recited be durable, strong and simple, is a prime requisite, and to provide such means constitutes another object.

Minor objectsV will presently appear; some of these will be obvious and others will be particularly pointed out.

The invention consists, substantially, in the constructions and combinations particularly pointed out,

In Ythe accompanying drawings, which illustrate a preferred embodiment of my inventionz'Figure 1 is atop plan, showing the complete invention as in use;Fig. 2, a transverse section,y partly in elevation, the plane of section being taken substantially in the line y2- in Fig. 1; Fig. 3, a perspective detail of the cam-ring'and actuating lever'fFig'. 4, an elevation of the latch-engaging member or keeper, seen in the line 4.-4, Fig. 1; Fig. `5, a bottom plan of the same member; 'YF ig. 6, a top plan detail of one of the base-plates; Fig. 7,'a front elevationof the integral latch'and spring-box; and Fig. 8, an inverted plan thereof.A

'Comingnow to a detailed description of the drawings, in which the same reference numeral uniformly indicates the same part, 2 indicatesA a base-plate having an ear 3 at each of its ends, yeach ear havingl an aperture-4.

5, 5 are bosses or supports, the former acting also as a'fulcrum or rocker for the latch and spring-box.

6 indicates a central aperture.

7 (Fig. 3) designates a combinedl camring (8) and actuating lever 9. The ring is provided with a cam-face 10, a horizontalv face 11, and shoulders '12 and 13.

- 14 (Figs. 7 and `8v) designates a latch, one

end of which constitutes a spring-box 15 provided with' a conical 'central aperture for the reception of an inverted screw 17 upon which it'both pivots' and tilts or rocks. I Thehead ofsaid screw engages the aperture'6 in the Vplate 2 andy its -threaded upper end engages thev threads of an aperture in a cap 18 provided with ears 19' having eachl an aperture 20 for the reception of 'screws 21 which passv also through the apertures 4 in the base-plate 2 andare threaded into the upper rail of the sash 22.

23, 24` indicate respectively' upper and lower panes, 'secured byv putty 25 'to the sashes. i

26 indicates the latch-stem having at its terminal a lateral projection 27 and an upstanding projection 28'. Its vextremity is preferably rounded oit' to provide a smoothcontact Iace 29, andthe inner face of the 1 projection is similarly fashionedto provide a cam-face 30, Coiled around the screw 17 is alatch-return spring 5 1 which acts both torsionally and by axial expansion. One of its ends engages'an aperture 31 in the bottom of the box` 15 and its otherend engages anaperture`32 inthe cap 18, I i

33, 33 Aindicate .Oppositely disposed arcu- 1kate grooves in the lower face ofthespringox. Y

34 indicates a base-plate each end e of which 'is apertured. e

35 lindicates a latch-receiver or keeper: having at each end an ear provided with an aperture registering with the corresponding one in the plate 34.v 36, 36 designate screws vpassedone through each pair of said apertures and threaded into the lower rail of the upper (or outer) sash, 37.

38 indicates the back, which is a plate.

39 indicates an inclined way, undercut at 40.

41 indicates a 'j projection affording a Shoulder 42, and 43 indicates a transversely arranged recessv for the reception of the latch-stem 2,6. .Y

44 represents a recess for theprojections 27 and 28. Y

TheV operation is as follows: Assume the parts to bein the relative positions shown by full lines in Fig. 1, which is the locked one. To release the interlock therlever 9 will be drawn. (against the resistance ofthe spring)- to the dotted line position m, Fig. 1, by which movement the spring-box bottom will tilt orrroclr on the boss 5 to throw the locking end of the latch-stem 26 downward, the movement thereof being caused by the cam-face 10 bearing upon said end of the lever. When the shoulder 12 strikes the stem 26 theele'ment'14 will be m0vedroflat tatively with the element 7. A further pulll with. f The operator will still hold the 'lever' and lwill simultaneously raise the sash 22 to bring the stem 26 into the inclined wayy 39 v and the projection 27 into the undercut groove 40. He will then release Vthe lever 9 and raise the sash to any position desired, the stem 26` and projection 27 sliding upward in and out of their respective channels.. Y v

To lower the vlower sash from the elevated'position just described andto klock it in the position shown in full lines in Fig. l, the lower one is merely to be drawn down, whereby the stem 26 and projection 27 will automatically enter and pass down their respective ways. When the stemhas reached a horizontal plane below that of the point 46 (Figs.f4 andk 5) the spring 51 will'auto` .matically act, by tor-sion', to throw it backward over the face ofV the projection 4l. While the above movements were progressing the bosses 5, 5 were lying inthe grooves 33 andthe bottom of the element 14 resting on the base plates. When said stem has moved entirely' past the Vshoulder 42 the beveled or inclined terminals of the'grooves 33 will move upward on the bosses 5,5 to raise the element 14 to the .full line position shown in Fig-2, the projection 28 lying locked inthe recess 44, the stem'26 against the shoulder 42, and the spring Vaxially compressed. Y i

The cam-face 30 `in moving as last described will pass behind the curved or carnface 50 ofthe shoulder 42 and thus. draw the sashes tightly together. The projection 27 will move in contact with the proximal wall of the undercut groove 40 and tend to draw said sashestoward each other as the sash 22 is being lowered.

ticularly noted in `the several claims,) to the i lspecific structure shown anddescribed, but

consider it ascovering all such changesY as fallwithin'the general idea thereof, considered in its broadestaspect. 4

Having thus described the characteristics of the invention, l claim as new the following, to-wit: l l

` 1. ln a sash-lock, a pivoted latch one fendi of which has a lateral and a vertical projection andthe other end of which constitutes a spring-box, a spring arrangedin said'box Y nature and and adapted to impart pivotal movement )in i one directionto said latch, and a latchlre-v ceiver having an undercut grooveVV and an inclined way for l'the `passage of `said' pro-v i jections respectively and havingV also cesses into which said projections pass.

2. In a sash-lock, an integral, tiltable spring-box and latch-stem, spring 'coiled in said box and one of its ends securedV thereto, meansfor securing its otheren'd, ai

cam-faced element adapted" to turn said'box and stem rotatively and tojtilt them, 'and a. latch-rece1ver adapted for yengagementV by said stern.

3. ln a sash-lock, .a base-plate ihaving l spaced'bosses, a pivotally mounted spring-` box normally resting onV said bossesgpand provided with arcuate grooves in its lower face, said boxhavingf a latch-'stemintegral therewith, means .for rotatively movingsaid spring-box and thereby said latch-stem Vto bring said grooves into positionY to receive said bosses and thereby permit the springbox and latch stem tormove to a lower plane, means for forcing them to such lower plane, and a latch-receiver ladapted for engagement bysaidstem- V 'f 4. In a sash-lock, a latch both pivotally and tiltably mounted, a latch-'receiver having'an inclined way adapted for theV passage of said latch whereby'to move it pivotal'ly and having also a locking projection form-l ing one wall 'of a recess, means for tilting said latch to permitit to pass beneath said projection, and means for causing said'latch to enter said recess.

5.111 a sash-lock, ak latch receiver having an inclined way and an inclined undercut groove communicating therewith, there being a projection at the relatively inner end of said way and a latch-locking recess at the relatively inner end of said projection.

6. In a sash-lock, a latch-receiver, an integral spring box and latch-stem capable of being tilted, a manually actuable rotatory element having a cam face, said rotatory element adapted to impart rotatory movement in one direction to said integral element, and to tilt it, and a spring arranged in said spring-box and adapted to impart the same movements in the contrary direction to said integral element, said receiver provided with portions adapted for sliding contact by said latch-stem and provided with other portions adapted for locking engagements therewith.

7. In a sash-lock, a latch-receiver provided with an undercut groove and with an inclined way, and provided also with a recess one wall of which is aorded by al shoulder, and a spring-controlled latch having a' projection adapted to move in said groove, its end adapted to move in said way, and one oi its portions adapted lto rest in said recess and to lock against said shoulder. l

8. In a sash-lock, a latch-receiver provided with a recess one wall of which is formed by a projection, Van integral element comprising a spring-box and latch, means on which said integral element is pivotally mounted, a rocker on which said integral element is adapted to rest, means for tilting or rocking it thereon, and a spring arranged in said box and adapted to impart rotative movement to said integral element to depress said latch below said projection and into said recess.

9. In a sash-lock, a base-plate having a pair of bosses, a spring-box seated on said bosses and having arcuate grooves adapted for the reception of said bosses, said springbox including a latch-stem, a cap, a screw or the like connecting said plate and cap, a ring provided with a cutaway portion one wall of which is a cam-face, a` spring coiled around said screw and arranged in said boX, one of its ends secured to the boX and the other to the cap, said box arranged in said ring and the latch-stem in said cutaway portion, said ring having an actuating lever whereby it may be turned to cause said latch and spring-box to tilt on one of said bosses and to bring said grooves into position to receive the latter, and a latch-receiver having portions adapted to be passed beneath by said latch-stem as the latter is tilted downwardly vand to be engaged thereby to interlock therewith when they are tilted upward.

10. In a sash-lock, a base-plate having a pair of bosses, a spring-box normally rest ing on said bosses and having a latch-stem, said box provided with grooves for the reception of said bosses, manually actnable means for bringing them intoyposition to receive said bosses or for removing them therefrom, a spring arranged in said boX and adaptedto impart rotatory and downward movement to said boX and stem, and a latch-receiver adapted to be engaged by said stem in all of said movements.

11. In a sash-lock, an integral spring-box and latch-stem capable of being tilted, a spring for imparting pivotal movements thereto, a cam-ring adapted to impart both pivotal and. tilting movements to said box and stem, and an element adapted for locking engagement by the latch.,

12. In a sash-lock, an integral spring-box and latch-stem capable Vof being tilted, a

spring for imparting pivotal movementsv thereto, a cam-faced element for imparting both pivotal and tilting movements to said boX and stem, means for imparting upward movements to said boX and stem, and an element adapted for locking engagement by said latch.

In witness whereof I hereunto sign my name, at Galesburg, in the county and State above written, this fifth day of April, 1915.

ROY OVERAND.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Yatents. Washington, D. C. 

